In order to hard reset a BenQ-Siemens A53, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
BenQ-Siemens A53 device will be brought back to the default configuration of a brand new device.
1. Switch on the phone.
2. Open up the Dialer and type in this code: *#9999#
3. ur phne will rboot. Or, in normal language, your phone will now reboot. Done.